Question

Person Name: John Doe

Person Birth Year: 1960

Person Name: Emily Zhang

Person Birth Year: 2007

Student Major: Finance

Person Name: Paul zhang

Person Birth Year: 1970

Instructor Salary: $50,000.00

Exception in thread "main" java.util.InputMismatchException

at java.base/java.util.Scanner.throwFor(Scanner.java:939)

at java.base/java.util.Scanner.next(Scanner.java:1594)

at java.base/java.util.Scanner.nextInt(Scanner.java:2258)

at java.base/java.util.Scanner.nextInt(Scanner.java:2212)

at PersonTest.main(PersonTest.java:47)

import java.util.Scanner;

public class PersonTest {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

System.out.print("Person Name: ");

String student_name = scan.nextLine();

System.out.print("Person Birth Year: ");

int student_yearOfBirth = scan.nextInt();

Person p = new Person(student_name, student_yearOfBirth);

scan.nextLine();

System.out.print("Person Name: ");

student_name = scan.nextLine();

System.out.print("Person Birth Year: ");

student_yearOfBirth = scan.nextInt();

scan.nextLine();

System.out.print("Student Major: ");

String student_major = scan.nextLine();

Student s = new Student(student_name, student_yearOfBirth, student_major);

System.out.print("Person Name: ");

String instructor_name = scan.nextLine();

System.out.print("Person Birth Year: ");

int instructor_yearOfBirth = scan.nextInt();

System.out.print("Instructor Salary: ");

int instructor_salary = scan.nextInt();

Instructor i = new Instructor(instructor_name, instructor_yearOfBirth, instructor_salary);

System.out.println(s.toString());

System.out.println(i.toString());

}

}

Answer 1

I do not have your instructor and student classes, So i can not run and test the code.. But i can explain why you are getting the error.

The Scanner's class nextInt method expects an integer to be read, to contain only digits.. no comma and dollar signs.. As you gave the input as $50,000.00, it failed.. What you should do is to give it only digits as the input.. and it will work fine..

In case, you still want to input the salary with dollar and comma sign, you then need to read it as string first, remove the dollar and comma sign your self, then using Integer.parseInt method, you can convert the string to integer.

hope it helps! let me know if any issues.